Marc Marquez has told brother and new Repsol Honda team-mate Alex Marquez he must "earn" a contract renewal.
Alex, 23, won the Moto2™ title in 2019 and will make the step up to MotoGP™ for the 2020 season after replacing the retiring Jorge Lorenzo in November.
Six-time MotoGP™ world champion Marc signed a new four-year contract extension last week - keeping him at Honda until the end of 2024 - but his younger sibling has just a single-season deal for his debut campaign.
And Marc, who is bidding for a fifth straight title in 2020, insists he will have no impact on any decision to extend Alex's terms.
"At no point does the team-mate touch on the subject of contracts," he said at a press conference on Thursday.
"I have never vetoed anyone. I did not veto last year the arrival of Jorge Lorenzo, nor will I impose on [Honda] my brother or anyone else.
"If Alex wants to stay with Honda, he will have to earn it himself. If he doesn't, another team-mate will come to the team.
"Alex is old enough to make his own career. I'm focusing on my own."